Method of preparing a conjugated molecular assembly

Abstract

A method for preparing an extended conjugated molecular assembly includes applying onto a surface of a substrate a first molecular compound G1-Molecule1-G2, where G1 includes a first functional group, G2 includes a second functional group, and Molecule1 includes a conjugated organic group bonded to G1 and G2, and reacting the first molecular compound with a second molecular compound G3-Molecule2-G4, where G3 includes a third functional group. G4 includes a fourth function group, and Molecule 2 includes a conjugated organic group bonded to G3 and G4, to form on the substrate an extended conjugated molecule G1-Molecule1-Molecule2-G4.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This Application is related to U.S. patent application Ser. No. 10 / 392,983 filed on Mar. 21, 2003, entitled “ELECTRONIC DEVICE INCLUDING A SELF-ASSEMBLED MONOLAYER, AND A METHOD OF FABRICATING THE SAME”, assigned to International Business Machines Corporation, and incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a conjugated molecular assembly, a method of fabricating the assembly, and a device including the assembly and, in particular, a conjugated molecular assembly having an extended conjugated segment.[0004]2. Description of the Related Art[0005]During the past three decades, renewed interest and considerable progress has been made in the synthesis and chemical and physical understanding of conjugated molecules and macromolecules. The attention is largely driven by applications of conjugated molecular assemblies in optical, optoelectronic, electronic, and...

AI Technical Summary

Benefits of technology

[0018]In view of the foregoing and other problems, disadvantages, and drawbacks of the conventional assemblies and methods, it is a purpose of the present invention to provide a conjugated molecular assembly (and method of fabricating the assembly) which includes molecules with long molecular lengths (e.g., extended conjugated molecules) and allows for a wide range of functionality.

[0036]With its unique and novel features, the present invention includes a conjugated molecular assembly (and method of fabricating the assembly) which includes molecules with long molecular lengths (e.g., extended conjugated molecules) and allows for a wide range of functionality. The present invention also provides an improved molecular device having improved electrical or sensor properties.

Problems solved by technology

This gives rise, especially when functionalized, to solubility not found in shorter molecules and oligomers, but also to a distribution in physical properties and a lack of order in polymeric thin films.

While some assemblies have been synthesized, these techniques do not enable assembly onto surfaces.

The SAMs investigated to date are typically short conjugated molecular segments as the longer molecules, which may be interesting for devices, are no longer soluble and therefore have not been investigated.

To date, only very simple and short conjugated self-assembled molecules have been investigated and therefore have not incorporated some of the desired molecular functionality.

While there are a few examples of layer-by-layer assembly using covalent interactions, none of the examples allow for carbon-carbon bond formation.

Layer-by-layer assembly methods, while attractive for the formation of extended molecular structures, have not been demonstrated for the formation of carbon-carbon bonds necessary to form the extended conjugated molecular assemblies interesting for applications.

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